Accepting Terms of Service
In order to access the WhatsApp Business Messaging Cloud API you need to first accept the WhatsApp Business Platform Terms of Service on behalf of your business.
To do so, navigate to WhatsApp Manager and accept the terms of service in the informational banner.
If you are an existing beta partner for the Cloud API you have a grace period of 90 days. This means you need to accept the terms before July 5, 2022 or you will lose access.
For any new Cloud API businesses, including those migrating from the on-premises API, you will need to accept terms of service before you can start using the Cloud API. Registration calls will fail until you accept the terms of service.
NOTE: You as a developer need to accept the terms of service. If you are a Business Solution Provider, you do not need your customers to accept.